Answer:
A Fair use of those images is the correct answer.
Explanation:
Kelly V. Arriba soft corporation was US court case. In this case the plaintiff was a commercial photographer and the defendant was a search engine company named DItto.com and the court decided that Search engines could use thumbnails of images. The case was unable to resolve the issue of inline linking to full size images.
The circuit court found that the photographer had established a case of copyright infringement, while as per section 107 of copyright act, it was case of Non infringement fair use.